怎么在EXECL文件中同时导入数据和插入图片？

/// 
/// /// 
/// 数据源/// 文件路劲例如（E:\\Execl\\201706070001.xls）protected void ExportExcel(DataTable dt, string filepath)
        {if (dt == null || dt.Rows.Count == 0) return;

            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();object m_objOpt = System.Reflection.Missing.Value;if (xlApp == null)
            {return;
            }//System.Globalization.CultureInfo CurrentCI = System.Threading.Thread.CurrentThread.CurrentCulture;System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");

            Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;

            Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);

            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];

            Microsoft.Office.Interop.Excel.Range range;long totalCount = dt.Rows.Count;long rowRead = 0;for (int i = 0; i